2122213123121 has 16 divisors (see below), whose sum is σ = 2612056898304. Its totient is φ = 1679047925184.

The previous prime is 2122213123117. The next prime is 2122213123153. The reversal of 2122213123121 is 1213213122212.

It is not a de Polignac number, because 2122213123121 - 2² = 2122213123117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122213123181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1949180 + ... + 2836146.

It is an arithmetic number, because the mean of its divisors is an integer number (163253556144).

Almost surely, 2^{2122213123121} is an apocalyptic number.

It is an amenable number.

2122213123121 is a deficient number, since it is larger than the sum of its proper divisors (489843775183).

2122213123121 is a wasteful number, since it uses less digits than its factorization.

2122213123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913280.

The product of its digits is 576, while the sum is 23.

Adding to 2122213123121 its reverse (1213213122212), we get a palindrome (3335426245333).

Subtracting from 2122213123121 its reverse (1213213122212), we obtain a palindrome (909000000909).

The spelling of 2122213123121 in words is "two trillion, one hundred twenty-two billion, two hundred thirteen million, one hundred twenty-three thousand, one hundred twenty-one".